Microsoft announced on Tuesday that Peter Moore has officially resigned as the president of its Xbox business. The Briton will be replaced by Don Mattrick, a former EA executive.

The incoming head of Xbox and Microsoft's game division was most recently the president of EA's Worldwide Studios, until his resignation in February 2006. In February 2007, Mattrick began working as an external adviser to Microsoft.

"Peter has contributed enormously to the games business since joining Microsoft in 2003 and we are sad to see him go," said Robbie Bach, president of Entertainment and Devices Division at Microsoft. "Since that time, he presided over the global launch of the Xbox 360, spearheaded a revitalized and rebranded Games for Windows business, and helped steer the console's ascent."

Moore will remain with Microsoft through August to help with the transition.

"While Peter will certainly be missed, we are delighted to have one of the industry's most talented and passionate veterans on board to lead the business," Bach added in a statement. "Under Don's leadership, the games team is looking forward to embarking on our biggest holiday ever, with a wide-ranging roster of some of the most highly anticipated titles."

Mattrick brings 23 years of games industry experience to the Microsoft management team. He is credited for helping to promote Need for Speed, Harry Potter and The Sims while at EA.